I mentioned before that I’m a big fan of using color to call attention to the easy-to-miss aspects of a crochet pattern. This stitch is laughably easy and doesn’t make much of a splash when crocheted in a single color, except for its slightly bumpy texture. But it creates a zig-zaggy up-down effect when you use colored yarn and work the pattern in stripes.
I’m sure this stitch already has a name, but I’m calling it the up-down stitch because it’s made by alternating double crochet (up) and single crochet (down). Besides, it sounds better than tall-short stitch.
Here’s the incredibly easy pattern:
Multiple: 2, plus 2 for turning
Row 1: Sc in 3rd ch from hook. (dc in nxt ch, sc in nxt ch) repeat across, and dc in last ch. Ch 2, turn.
Row 2: Skip first dc, (dc in sc from prev row, sc in dc from prev row) repeat across, and dc in ch-2 of prev row. Ch 2, turn.
Repeat Row 2. For stripes, change color each row. If you don’t want to FO each time, use an odd number of colors.